Draxler, M., Walker, M. and McConville, C. F. (2006) Determination of a correction factor for the interaction potential of He+ ions backscattered from a Cu(100) surface. In: 17th International Conference on Ion Beam Analysis, Seville, SPAIN, JUN 26-JUL 01, 2005. Published in: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 249 pp. 812-815.

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Abstract

We have used coaxial impact collision ion scattering spectroscopy (CAICISS) data collected from 3 kev He+ ions backscattered from a Cu(100) surface in different azimuthal orientations to investigate the influence of the screening length on CAICISS polar angle scans. We have compared the experimental data to computer simulations generated with the FAN code and found that for our experimental conditions an exceptionally low value of 0.53 was required for the correction factor to the Firsov screening length used with the Thomas-Fermi-Moliere potential. In addition we found that the Ziegler-Biersack-Littmark potential is not applicable, resulting in incorrect peak positions in the CAICISS polar angle plots. (c) 2006 Elsevier B.V. All rights reserved.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	Q Science > QC Physics
Journal or Publication Title:	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Publisher:	ELSEVIER SCIENCE BV
ISSN:	0168-583X
Date:	August 2006
Volume:	249
Number of Pages:	4
Page Range:	pp. 812-815
Identification Number:	10.1016/j.nimb.2006.03.177
Publication Status:	Published
Title of Event:	17th International Conference on Ion Beam Analysis
Location of Event:	Seville, SPAIN
Date(s) of Event:	JUN 26-JUL 01, 2005
URI:	http://wrap.warwick.ac.uk/id/eprint/33212

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